Table 1 Participant assessment and time point requirements throughout the study
Assessment | Time required | Timeline (months post randomisation) | ||||
|---|---|---|---|---|---|---|
| Â | Â | Baseline | Randomisation | 3-month Follow-up | 6-month Follow-up | |
Eligibility and consent | ||||||
 Eligibility | NA | X |  |  |  | |
 Consent | 15 min | X |  |  |  | |
 Randomisation |  |  | X |  |  | |
Background | ||||||
 Relevant contact details | 5 min | X |  |  |  | |
 Body Mass index | 5 min | X |  | X | X | |
Mental health details | ||||||
 Mental health history |  | X |  |  |  | |
 Current mental health status |  | X |  | X | X | |
 Current medications |  | X |  | X | X | |
 Referrals to mental health services |  | X |  | X | X | |
 Admissions to hospital related to mental health |  | X |  | X | X | |
Physical Activity | ||||||
 Accelerometer data collection | 10 days | X |  | X | X | |
 Adverse event reporting |  | Ongoing collection | ||||
Questionnaires | ||||||
 Acceptability Intervention Measure (AIM) (for intervention participants only) | 20–30 min total |  |  |  | X | |
 Patient Health Questionnaire (PHQ-9) | X |  | X | X | ||
 Generalised Anxiety Disorder-7 (GAD-7) | X |  | X | X | ||
 Short Form-12 (SF-12) | X |  | X | X | ||
 Simple Physical Activity Questionnaire (SIMPAQ) | X |  | X | X | ||
 EuroQol-5D-5L | X |  | X | X | ||
 Recovering Quality of Life (ReQol) | X |  | X | X | ||
 Healthcare resource use | X |  | X | X | ||
Interviews | ||||||
 Follow-up interview (n = 20) | 30–60 min |  |  |  | X | |